中文摘要：

采用共沉淀法制备了二氧化钌/石墨烯纳米复合材料应用于超级电容器中,并利用扫描电镜（SEM）、透射电镜（TEM）以及X射线衍射（XRD）对材料表面结构形貌进行了分析。将电极材料装配成极片,组装成超级电容器并进行电化学性能测试,实验表明,含有质量分数为5%石墨烯的复合材料表现出很好的电化学性能,该材料单极首次放电比容量有740F.g-1;在2A.g-1的电流密度下,8 000次深度循环后容量保持率为71%且具有很好的稳定性,比容量和循环性能都要优于纯的氧化钌材料,表明合成的复合材料适合用于超级电容器中。

英文摘要：

RuO2/Graphene nano-composite materials for supercapacitor were prepared by co-precipitation method. The morphology and structure of the composites were investigated through scanning electron microscopy （SEM）,transmission electron microscopy （TEM） and X-ray diffraction （XRD）. The materials were coated onto electrode as laminates and assembled into supercapacitors. Electrochemical measurements showed that the composites with 5 % wt graphene exhibited good electrochemical performance,and its initial specific capacitance of the composite electrode was 740 F.g^-1. Under 2A.g^-1 current density and after 8000 deep cycles, the specific capacitance of RuO2/Graphene composite could still retain 71%. The specific capacity and cycle life performance of the RuO2/Graphene composite was found to be much better than the pure RuO2 materials＇,which indicated that the composite material might be a good candidate electrode for supercapacitors.